Hoist.



PATENTED MAR. 17, 1908.

E. Y. MOORE.

HOIST. APPLICATION FILED FEB.

PATENTED MAR. 17, 1908.

E. Y. MOORE.

HIST.

APPLICATION FILED fm1, 10m

2 SIEETS--SHEE'I' 2 @MUM 'and having its litt chsin extendingr .around athe axis of the hook, the lift chain hanging in l s bightwhich passesthrough s movable loudsupporting wheel and the shank or" the hook,

- balance.

.the line 3-3 Fig. 2; is e- 'nun'.iersis,v 1( sul l erts of the EDWARDY. MOORE, Ol*

CLEVELAND, OHIO.

Hor'sfr.

Application filed February 1,

To all whom it may concern: l Be it known'thst l, Enwnnn Y. Moons, acitizen of the United States, residing at Cleveland, inthe county ofCuyahoga and State of Ohio7 have invented :t certain new and usefulImprovement in lloists, of which the ollowin is a full, clear, end exactdescription, reierenee being had to the eccompan ing drawings.

T iepbject of this invention is to provide an elhcient portable hoistfor high speed and com aratively small loads.

Patent No. 757,333 issued April 12, 1904;, shows olhoist suspensiblefrom a. hook pocket wheel whose exis is directly beneath su ortingpulley, es is usuel.

e present'invention rovides meeh'enism whereby such type of ioist moy oerste with a chain extending in o. single renc from the load to thesupport. This not onlyY enables the lood to be raised with twice thespeed, but it also enables n hook to be provided et the end of the littchain, wherebyv that chain may be used as n sling around the article tobe lifted.

The invention comprises the combina-tion of a lift wheel, a suoportinghook above the axis of the lift wheel, and a means carried by the hoistframe and operating to deflect the lift chain to bring it beneath theaxis oi the so that the hoist will not be thrown out of The invention isillustrated in the drawings embodied in c hoist of the type shown in mystent referred "to, and is hereinafter more ullly' described.

-lligure l is s vcrtieel section through the hoist along the exis of theshank of the supporting hook; Fig. 2 is s sideclovotion; Fig. 3 is sfingiientory horizontal section throu one of the lifting eccentrics, usindicated b3l plan oi the hoist portly broken :tw/ey is n verticalsection oi the hoist in s plone parallel with Fig. 2 and tekensubstantially on the line 5---5 of Fi 4.

Beloning rto the drawings bv reference i 11 represent two moin Theseports :ire rought togo the..r ne neuer ends where they are held hy heirstrie supporting hook 13 lievi/ng its shsfnlr swiveledin recesses hoistpreme Specification of Letters Patent.

shaft 23 which is journuled on Patented March 17, 190s.

1907. Serial No. 355,254.

at the junction of the frame members. The

frame members are braced. bv the stationery sleeve 14 extending acrossthem. Mounted on this sleeve is e. lift wheel 15, which, es shown, hasockets ior the reception of the links of the ift chain 16.

The mechanism shown for rota-ting the lift wheel l5 is shown, describedund claimed in my vpotent referred to. lt will now be briefly described.The lift wheel is provided with gear teeth 17. Surrounding this gear 17is a. Yoke 1R having internal teeth of grenter number than the teeth 17.The yoke 1s mounted on s pair of ecccntrics() which are j our'naled inthe frame members and which have rigid with their shunlrs gears 21. i

weer 22 on a tthe sleeve 14. On this shaft is n suitnblehond-choin-wheel 25 adopted to drive it.

. As shown, suitnble broke mechanism is provided, and forms theconnecting mechanism between the hond chain wheel and the shaft 23. Thisbroke mechunisni includes it loose disk 26 having ratchet teeth, a pawl27 adopted to lock it, friction disks and a. coller having an inclinedlug 29.` This con` struction operates to force the hund wheel inuf'ordto chimp the disk 26 when the wheel is turned in o. raisingl direction.rlhis clamping during raising is idle :is the disk 26 rotates freelyunder the pnwl 27; it operates as a self-locking feature for holding;lthe lood :it any desired pointI while to lower the load it onljnecessary to turn the hund wheel hruikwurd keeping it ahead ot theloweringr load. rllhis ie :itu re ol' the brake is more fully explainedund is claimed in my Potent No. 794,997 issued July 1S, 1.905.

lt will be seen from the drawings ond dcscripl'ion that the axis of thelift wheel 14 is directly beneath the sbonk of the hook 13, und 'thepoint from which the hook is suspensihle. rlhis construction enables thehoist to be well huls-need. For light loods it is desiruble to use :tsingle lilt chnin instead oi' one depending in u bight. To enable suchlil't ehzi-in to he used while preserving the baluncing ol the hoist, Iprovide mechanism to bring the load supporting hook directly beneath theexis ot' the lift wheel. This is shown in Fig. 5 ond is accomplished byproviding n grooved roller 3() iouriuilcd lbetween the traine pluies 1l)und l 1 lower than the lift wheel and outx of the vertical plone throughits exis. The groove of this roller is edsptedto These gears 21 meshwith the receive those links which are parallel with the frame plates,the links transverse to the frame plates lying on the surface of theroller.

Co erating with the roller is a stationary guide block 3l carriedbetween the frame plates and having a. groove corresponding to thegroove in the roller. This guide block and roller are so placed that thechain hangs down from the hoist directly beneath the axis of the liftwheelv and beneath the shank of the supporting hook- The lift chainbeingy )rovided with a hook 32 at its lower end, the ower portion of thechain may be used as a sling, the hook hooking around the chain itself,as is well understood. The idle portion of the chain may depend freelyfrom the opposite side of the lift wheel, the end of this idle portioneitherhanging down or being suitably supported, as shown in Fi 5 by theeye 34 to' which the end of the c ain 16 is secured'. Y l

It will be'seen that by very simpleniechanisn). l have provided abalanced suspensible hoist operating with a single lift chain, so thathigh speed may be attained.

I claim:l

l. The combination of a hoist frame, a supporting hook having its shankswiveled thereto, a lift wheel directly below thesaid shank, a guideroller below the lift wheel but offset from the plane through said shankand axis of the lift wheel, said roller havingl a peripheral groove toreceive the links facing at right angles to the axis of the roller and aeylindrioal portion on each side of the groove to receive the linksfacing parallel with said axis, a chain extending over the lift wheeland along the inner side of the guide roller, and a chain guard carriedby the hoist frame cooperating with said roller and providing achain-raceway between thern limited to .a single chain, said guide beingout of the way ofthe portion of the chain depending from the other sideof the lift wheel.

2. In a hoist, the combination of a frame including a'pair of sideplates, a hook having its shank swiveled to said frame, a lift wheel ycarried by the frame, a guide roller carried by the frame on an.- aXisparallel with the lift EDWARD Y. MOORE. Witnesses ALBERT H. BATES,"WINIFRED L. MCGARRELL.

